“Even small amounts are deadly’: Spread of zombie drugs in Europe calls Interpol into action. “The fact is that fentanyl is already in Europe, is extremely potent and must be treated as an imminent threat,” Interpol Secretary General Jürgen Stock told Welt am Sonntag.

Fentanyl is a strong painkiller that is used, among other things, by cancer patients, but is also traded illegally. With chemicals manufactured primarily in China, it is often produced in Mexico and smuggled from there to the USA.